The Siemens SIRIUS 3RV2031-4UA10 Motor Protection Circuit Breaker (MPCB) is a high-performance industrial circuit breaker designed to provide motor overload protection, short-circuit protection, phase failure protection, and safe electrical isolation for three-phase motors. As part of the trusted Siemens SIRIUS 3RV2 Series, this Size S2 Motor Protection Circuit Breaker combines a Class 10 thermal overload release with a 585A magnetic short-circuit release, delivering reliable motor protection and long service life in demanding industrial environments. It is an ideal solution for Motor Control Centers (MCC), industrial automation systems, OEM machinery, electrical control panels, pump control panels, compressors, conveyor systems, and manufacturing facilities.
The 3RV2031-4UA10 features an adjustable thermal overload current range of 32–40A, 585A magnetic short-circuit release, 3-pole construction, screw terminal connections, and standard switching capacity. Designed for operation up to 690V AC, it provides dependable protection against overload, locked rotor, phase failure, and short-circuit faults while ensuring maximum operational reliability. Its compact S2 frame integrates seamlessly with Siemens SIRIUS contactors to create efficient Direct-On-Line (DOL) starters, Star-Delta starters, and complete motor starter combinations.
Built for continuous industrial operation, the Siemens 3RV2031-4UA10 is widely used in water treatment plants, HVAC systems, mining, cement plants, steel industries, packaging machinery, food processing units, process industries, material handling systems, and factory automation. Its rugged construction, high mechanical endurance, and Siemens engineering help reduce maintenance costs, improve equipment uptime, and maximize motor reliability.
At SB Smart, we supply 100% genuine Siemens SIRIUS Motor Protection Circuit Breakers (MPCB), contactors, overload relays, soft starters, MCCBs, MCBs, and industrial automation products with competitive pricing, expert technical support, GST billing, bulk order assistance, and fast PAN India delivery.
Genuine Siemens SIRIUS 3RV2 Motor Protection Circuit Breaker
Model: 3RV2031-4UA10
Frame Size: S2
Adjustable Thermal Overload Range: 32–40A
Magnetic Short-Circuit Release: 585A
Class 10 Thermal Overload Protection
Standard Switching Capacity
3-Pole Configuration
Screw Terminal Connections
Rated Operating Voltage: 20–690V AC
Rated Insulation Voltage: 690V AC
Integrated Overload, Phase Failure & Short-Circuit Protection
Compatible with Siemens SIRIUS S2 Contactors
High Mechanical & Electrical Endurance
Suitable for DOL and Star-Delta Motor Starter Applications
Compact Industrial Design
Motor Control Centers (MCC)
Industrial Automation Systems
DOL Motor Starters
Star-Delta Starter Panels
Pump Control Panels
Compressors
Conveyor Systems
HVAC Systems
Water Treatment Plants
Mining Equipment
Cement Plants
Steel Industries
Packaging Machinery
OEM Electrical Panels
Factory Automation
Protects motors against overload and short-circuit faults
Integrated thermal overload protection reduces panel components
Reliable phase failure protection enhances motor safety
Fast 585A magnetic trip ensures rapid fault clearance
Compact design saves valuable control panel space
Easy installation with secure screw terminals
Reduces maintenance costs and unexpected downtime
Long mechanical and electrical service life
Improves motor efficiency and overall system reliability
100% Genuine Siemens Products
Best Siemens MPCB Price in India
Expert Technical Support
Bulk Order Assistance
Fast PAN India Delivery
Secure Packaging
GST Invoice Available
Trusted Industrial Electrical Supplier
Reliable After-Sales Support
The Siemens 3RV2031-4UA10 is a Motor Protection Circuit Breaker (MPCB) designed to protect three-phase motors from overload, phase failure, and short-circuit faults while providing safe electrical isolation.
The breaker provides an adjustable thermal overload setting from 32A to 40A, ensuring accurate protection for industrial motors.
It features a 585A magnetic short-circuit release, providing rapid fault interruption and dependable motor protection.
Yes. The 3RV2031-4UA10 is compatible with Siemens SIRIUS S2 contactors, making it suitable for DOL starters, Star-Delta starters, and motor starter combinations.
The breaker uses screw terminal connections, ensuring secure, vibration-resistant, and reliable wiring in industrial electrical panels.
Yes. SB Smart supplies 100% genuine Siemens SIRIUS Motor Protection Circuit Breakers with competitive pricing, expert technical support, GST invoices, and fast delivery across India.
| Parameter | Specification |
|---|---|
| Brand | Siemens |
| Series | SIRIUS 3RV2 |
| Model Number | 3RV2031-4UA10 |
| Product Type | Motor Protection Circuit Breaker (MPCB) |
| Frame Size | S2 |
| Thermal Overload Setting (A-Release) | 32.00–40.00 A |
| Magnetic Trip (N-Release) | 585 A |
| Tripping Class | Class 10 |
| Number of Poles | 3 |
| Rated Operational Voltage | 20–690 V AC |
| Rated Operational Current | 40 A |
| Rated Insulation Voltage | 690 V |
| Rated Impulse Withstand Voltage | 6 kV |
| Operating Frequency | 50/60 Hz |
| Connection Type | Screw Terminal |
| Switching Capacity | Standard |
| Degree of Protection | IP20 |
| Mechanical Endurance | 50,000 Operating Cycles |
| Electrical Endurance | 50,000 Operating Cycles |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -50°C to +80°C |
| Maximum Installation Altitude | 2,000 m |
| Relative Humidity | 10–95% |
| Approximate Weight | 1.074 kg |
| Mounting | 35 mm DIN Rail / Panel Mount |
| Application | Motor Overload and Short-Circuit Protection |
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